/Engine/Source/Runtime/Core/Public/Misc/DefaultValueHelper.h
Converts a string into aFLinearColor. Accepted forms: " %f, %f, %f " or " %f, %f, %f, %f " (alpha is optional).
true if the conversion happened, false otherwise
static bool ParseLinearColor ( const [FString](API\Runtime\Core\Containers\FString) & Source, [FLinearColor](API\Runtime\Core\Math\FLinearColor) & OutVal )